本文实例讲述了php使用文本统计访问量的方法。分享给大家供大家参考，具体如下：
方法1：
$fp = fopen("counter.txt", "r+");
while(!flock($fp, LOCK_EX)) { // acquire an exclusive lock
// waiting to lock the file
}
$counter = intval(fread($fp, filesize("counter.txt")));
$counter++;
ftruncate($fp, 0); // truncate file
fwrite($fp, $counter); // set your data
fflush($fp); // flush output before releasing the lock
flock($fp, LOCK_UN);// release the lock
fclose($fp);
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